Overview
CVE-2025-12585 identifies a sensitive information exposure vulnerability within the MxChat – AI Chatbot for WordPress plugin. This vulnerability affects all versions of the plugin up to and including 2.5.5. An unauthenticated attacker can exploit this flaw by leveraging predictable upload filenames to extract session values. These extracted session values can then be used to gain unauthorized access to user conversation data.
Technical Details
The vulnerability stems from the way the MxChat plugin handles file uploads. The plugin utilizes predictable filenames when storing user-generated content, such as attachments within chat conversations. These filenames inadvertently expose session-related information. An attacker can deduce session identifiers from these filenames, allowing them to impersonate users or access private conversation histories. The vulnerable code is located within the includes/class-mxchat-integrator.php file, specifically around line 107.
CVSS Analysis
- CVSS Score: 5.3 (MEDIUM)
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Explanation: This vulnerability is rated as MEDIUM severity because it allows unauthenticated remote attackers to gain read-only access to sensitive information (conversation data) without requiring user interaction. While the impact is limited to information disclosure, the ease of exploitation contributes to the overall risk.
Possible Impact
Successful exploitation of CVE-2025-12585 can have several negative consequences:
- Data Breach: Attackers can access and potentially exfiltrate sensitive conversation data, including personal information shared within chats.
- Privacy Violation: User privacy is compromised as unauthorized individuals can access their private communications.
- Reputational Damage: The website’s reputation suffers due to the security breach and potential exposure of user data.
- Compliance Issues: If the exposed data falls under regulatory compliance (e.g., GDPR, HIPAA), the organization may face legal and financial repercussions.
Mitigation and Patch Steps
The recommended mitigation is to update the MxChat – AI Chatbot for WordPress plugin to the latest version. The vulnerability has been patched in versions released after 2.5.5. To update the plugin:
- Log in to your WordPress administration dashboard.
- Navigate to the “Plugins” section.
- Locate the “MxChat” plugin.
- Click the “Update Now” button. If the update is not available through the dashboard, you might need to download the latest version from the WordPress plugin repository and manually update it.
If an update is not immediately available, consider temporarily disabling the plugin until a patched version is released. Additionally, review your website’s security practices and ensure you are using strong passwords, keeping all plugins and themes up to date, and implementing a web application firewall (WAF).
